<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>demo01第一个网页</title>
</head>
<body>
<!--1.标题标签 -->
<h1>一级标题</h1>
<h2>二级标题</h2>
<h3>三级标题</h3>
<h4>四级标题</h4>
<h5>五级标题</h5>
<h6>六级标题</h6>

<!--2.文本标签-->
<b>加粗</b>
<i>斜体</i>
<u>下划线</u>
<s>删除线</s>
<mark>高亮</mark>

<!--3.换行标签-->
<br>
<hr>
<mark>哈哈哈哈哈哈&nbsp;&nbsp;哈哈哈哈哈</mark>
<br>
<b>歌曲：&lt;彩虹&gt; &nbsp;&nbsp; 周杰伦</b>

<!--4.段落标签-->
<br>
<p>第一章</p>
<p>第二章</p>
<p>第三章</p>

<!--lorem+Tab键：生成假文-->
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Architecto, beatae consequuntur earum laudantium magnam numquam officia quo voluptas. Aliquam consequatur corporis est inventore ipsum laboriosam perferendis, porro qui reiciendis voluptas!</p>

</body>
</html>